Hello everyone, I am doing a simulation of wear in a mining truck hopper ... this study consists of 3 cases with 4 different sizes of spheres, (case 1: 180, 220, 280, 340; case 2: 340, 400, 440, 500; case 3: 500, 540, 600, 660 [mm]).
In case 3 I receive the error in the title, I understand that I should increase the value of the "neigh_modidy" command but I don't understand what value I should choose. It would be very helpful if you could advise me which value to choose.
Finally I say goodbye to everyone. Greetings to all.
attached input script
| Attachment | Size |
|---|---|
 script.txt | 40.32 KB |
mschramm | Thu, 05/13/2021 - 23:20
delay 0
Hello,
It is strongly encouraged to have no delay in the recreation of the neighbor list.
However, your neighbor command does seem off.
Right now, your bin sizes are, about, 338 mm. EDEM would recommend having bin sizes of 750 mm for your third case.
You may want to try different skin sizes to see if that helps you.
Fraonez | Fri, 05/14/2021 - 01:19
thank for the reply i will
thank for the reply i will try different skin sizes...i checked the neighbor command and for the si unit 0.001 bin = 0.001 m. how you know my skin size is 338 mm and how much bins are 750 mm.
You are the best thanks for take time to response, I apologize if I do not express myself well. thanks for correcting me in delay 0
mschramm | Fri, 05/14/2021 - 22:51
largest force cutoff distance
In the neighbor reference page, bin sizes are set to the skin distance (the 0.001 that you set) + half the distance of the max force cutoff distance.
For granular simulations, your largest cutoff will occur when your two largest particles hit each other. So for your simulation, it would set bin sizes to 338 mm.
You can bypass this and directly set the bin size. See the binsize keyword under neigh_modify.